DNA -- Tightly bound, Double-helix structure that
forms Chromosomes and contains Genes
Double-helix -- Two strands of
alternating sugars and phosphates with
nitrogenous bases lying like rungs on a
ladder, connecting the strands. These
strands resemble a staircase, so they are
called 'Double-helix'
Nitrogenous Bases
-- Composed of
Adenine &
Guanine (Purines)
as well as Thymine
& Cytosine
(Pyrimadine)
Genes -
Sequences within
DNA that act as
instructions to
create proteins or
do not create
proteins
Transcription - Creates
RNA out of DNA template
RNA -- Single strand structure that is
involved in protein synthesis. Contains the
nitrogenous base Uracil, instead of Thymine
Messenger RNA
(mRNA) -- Single
strand sequence
that contains
Codons/Exons (but
not Introns) for
creating specific
Amino Acids
Single strand -- One strand of
alternating sugars and
phosphates with nitrogenous
bases between them
Translation -- Process within the Ribosome
(created from rRNA) that uses instructions
(from mRNA) to create polypeptides from amino
acids (carried by the tRNA)
Polypeptide -- When there are many Amino acid's
within a Polypeptide, Proteins are created
Protein -- Complex
structure that performs
many functions for the
human body
Exons & Introns --
Exons are genes that
make proteins, they
become mRNA.
Introns are genes that
don't make proteins,
they get pulled out of
the RNA sequence
Codon --
Sequence of
nucleotides on
an mRNA strand
Transfer RNA (tRNA) -- Carries
Amino acids to ribosomes for
Translation
Anticodon --
Complementary
Codon to a
specific Codon
on the mRNA
strand
Amino acid -- Make
up Polypeptides
Ribosomal
RNA (rRNA) --
Contains
instructions
to create
Ribosomes
for
Translation